Switch.



M. GUETT.

SWITCH.

APPLICATION HLED Nov\21.1913.

MONROE GUETT,

TES PATENT i OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE HART &, HEGEMANunie.

CONNECTICUT.

SWITCH.

Specification of Letters Patent.

Patented July 4, l 916.

Application filed November 21, 1913. Serial No. 802,217.

To all whom it may concern.' Be it known that I, MONROE GUETT, a citizenof the United States, and a resident of Hartford, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Switches, of which the following is a specification.

The object of this invention is to improve the construction of snapswitch mechanisms, particularly in respect of that part which has to dowith the operation and control of the blades.

Referring to the drawings-Figure 1 is a side view of a complete switchembodylng the invention, the receptacle being shown 1n section. Fig. 2is a view partly in section, taken on the line 2-2 of Fig. 4, looking 1nthe direction of the arrow. Fig. 3 is a similar View showing the bladecarrier in place. Fig. 4l is an end view of the complete mechanism. Fig.5 is a side view of the mechanism showing the blade about to bereleased. Figs. 6 and 7 are detail views inside and end view of the rockbar. Figs. Sfand 9 are similar views of the blade carrier.

The invention is shown as embodied in a push button switch wherein-adenotes the receptacle, Z), b, the stationary contacts therein, and cdenotes generally the sivtchinechanism. The switch wmechanism is mountedon a frame which may conveniently be a box-like structurev having frontand rear plates 2, 3, an upper cross plate 4, andbottom cross plates 5,5, forming the feet 0n which the Inechanism rests in the receptacle. Theparticular structure of thel frame is not material, though I have foundthat here illustrated and described a satisfactory one.

10 is the spindle supported in the side plates 2, 3, and projecting tothe front of the latter.

positioned with relation to the spring arn I7 on the rock bar l5, thesespring arms being located between the ends of' a spriugi22 coiled on thespindle and operating in the usual way to tension the spring during theinitial movement of the operating handle, that is to say, one of thepush buttons, dur- Ving which time the spring arm connected with thepush button moves while the spring arm connected with the blades remainsstationary. A blade f is secured to the blade carrier.

Projecting to the rear from the lower edge of the blade carrier 20, andat each end thereof, are locking projections 23, 24, which engage, oneat a time, lugs 25, 26, on a lock plate 27 which is supported on a pin27a projecting from the rear of the front frame plate 3 and providedwith shoulders 28, 29, against which the ends of the dog 16 act. Aspring 33, bearing on a plate 32, which at its rear end is supported inthe frame plate 2 and at its front end rests on pins 30, 31 projectingfrom the lock plate 27 normally holds the lock plate so that its luge`25, 26, may engage with the locking projections 23, 24. The support ofthe lock plate on' the pin 27 is suciently free and loose to permit ofits movenient in various directions. For instance, it swings laterallyunder the action of the dog 1G to disengage the lugs 25, 26 from thelocking projections 23, 24 of the blade carrier. and it moves to therear bodily, or may be tilted sufficiently to permit theV lockingprojections 23. 2l to move by the lugs 25, 26` after which the spring 33moves the lock plate back to normal position in order that one of thelocking projections 23, 24, may be engaged with one of the lugs 25, 2G.

Assuming the parts to be in the position shown in Figs. l, 2, 3 and if.the operation is as follows Pressure on the button l throws` the rockbar l5 until the left hand end of the dog 1G acts upon the shoulder 23of the lock plate 27, rocking it on its pivot until the lug 25 iswithdrawn from under the locking projection 23 of the blade carrier 20.This action of the rock bar through the spring arm 17 has tensioned thespring, which upon the release `of the blade carrier throws the bladesto their other extreme posltlon. 'As

`the blades approach vthe end of this movement, the locking projection24 has a camming action on the end of the lug 25, swinging the lockplate 27 to the rear,enabl1ngv the rock bar to move to position, afterwhich the spring 33- bearing on the plate 32 which presses on the endsdf the pins 30, 31, throws the lock plate baolto normal position,v movingthe lug 26 under the locking projection 24; The-push button d is nowdepressed and e'felevated; 'and pressure on e will cause a similaraction of the `parts in theyreverse I direction. y.

I do Vnot desire it to. be understood that the structure-is limited touse'in a push button switch, or that the exact constructionhereillustrated and described 'may not be. altered or modified to suitspecial conditions. I have merely selected this embodiment of4 theinvention for illustration I claim:

and description..

1. In .an electric snap switch, an operating handle, an actuatoroperatively -con- `loelr plate, and means to return said blade carrierand lock plate to normal position.

2.- An electric switch mechanism' including, in combination with the`blades and oscillating blade carrier, a pivoted lock plate,

manual means for moving said lock plate on-it's\piv0t in a planesubstantially parallel to the plane of rotation' of the blade carrier,and automatically operating means to produce relative motion between thelock -plate and blade carrier in a direction at an angle to the plane ofrotation of the latter.

3. In an electric switch, the combination with the blades and anoscillating blade carrier, of a lock plate-supported for movement indifferent vertical planes, manual means for mo-ving said plate in oneplane,

, and automa-tically operating means for moving said plate in anotherplane.

4. In'an electric switch, the combination with an oscillating bladecarrier, of a lock plate, a support therefor to permit movement in a`plurality of directions, means for holding said lock plate in normalposition in operative relation with said blade carrier, interengagingparts 'on said blade carrier and lock plate, manually operated means formoving said lock plate to release said blade tion with said bladecarrier, engaging parts on said lock'plate and said blade carrier, meansconnected with said handle to move saidjlock plate to release said bladecarrier, and means on the blade carrier'to move said lock plate out ofnormal position.

y 6'. In an electric snap switch', a frame and spindle, a llock plateengageable with said 'blade carrier to hold it against movement, .a pinupon which said lock plate is loosely supported, meansl for holding saidlock f plate in normal yposition in operative rela tion with respect tosaid blade carrier, an actuator mounted on the spindle and cooperatingwith said lock plate to move it to release said blade carrier, anoperating handle connected with the actuator, and cam surfaces 'on saidblade carrier coperating with said lock plate to move it out of normalposition as said blade carrier approaches either of its extremepositions.

7. In an electrical snap switch, a frame and a spindle mounted therein,a blade carrier` mounted for turning movement on said spindle betweentwo eXtreme positions, a lock plate, interengaging parts on said bladecarrier and lock plate to hold the former in either ofits extremepositions, a rock bar mounted lfor turning on said spindle, an operatinghandle therefor, cooperatively arranged spring arms on said rock bar andblade carrier, a spring connected vwith said spring arm and forming adriving connection between said parts, dogs on said rock bar coperatingwith said lock plate, one at a time, to move it on itsv pivot andrelease said blade carrier, andv means on the blade carrier engagingsaid lock plate to move it to the rear as said blade carrier approachesits eXtreme position, and a spring to return the lock pla-te to normalposition after the blade carrier has reached its extreme position.

8. In an electric snap switch, the combination with the blades and anoscillating pole carrier provided with rearwardly extending lockingprojections at each end of its lower edge, of a lock plate supported inthe frame at the rear of the blade carrier and having forwardlyprojecting locks adapted to cooperate with the projections on the. bladecarrier to hold `the latter against movement, a rock bar and operatinghandles connected so vaspindle mountedtherein, a'blade carrier -mounted*for turning movement on sald therewith, dogs on said rock barcoperating carrier moves to one of its extreme positions,`

' with said lock plate to swing it laterally on and a spring to returnthe lock plate to nor- 10 its support to release said blade carrier, aVmal position into engaging relation with said Spring" connecting saldrock bar and blade .blade carrier.

carrier and operative to move the latter MONROE GUETT. When it isreleased, and means on said blade Witnesses:

carrier engaging the lugs on. the lock plate A. J. BENNETT,

to move the latter to the rear as'the blade ROY M. OLES.

Copies of this patent may be obtained for ave cents eaeh,'by addressingtho Gommlsap-ner qf Peking,

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